Which of the followia6ut3j 5hc -fu5pe rx+ng statements about the effect of surface area and volume on the cell’s processes5x3h -e j5+tfur p6acu is false?

  Which statement bestmwj hnsv2g-;-c z u:r-f;xhq5 describes stem cells?

  Which is a correct description ogmaf 3*92cv/p4lq sjof the cell type adapted for gas exchange in the lung q4j9gom2*as fp vc/3ls?

  Which of the following explains the limitations on cell size? esa*6 gu9dtv/ie/vv 3e z(8fu

  What is this cell's most likely primary functiony ,i 77itwxrf(, and where could it be located in a miyt w7xf7r,( iammal?

  Which of the following characteristics of type I pneumocytes cont g:n+s13qly rg8( x5dzzf b7kxribute to increasing :8 5g(r3 ndsfx7b xq1kg+zlyzthe rate of gas exchange?
I.
Cells are flattened
II.
Secretion of a surfactant
III.
Cover less than 10% of the alveolar surface

  A patient receives a +m - ei,rv+rdibone marrow transplant from a 36 year old. One of the functions of these cells is to produce red and white bloei vr+mr+ d-,iod cells. What type of stem cells has the patient received?

  Based on the Venn diagra/mdg.teie)r* m, which identifies cardiac muscle cells and striated mus*d/itee)g m .rcle fibres?

Below is a diagram of a motor neuronav.k8;oovka 2 . Neurons are the longest cells in the human bo;oa.vv 8k2ka ody.
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.

Premature babies sometimes suffe edziswj.m+ nj5yd0f1( an6 q-r from infant respiratory distress syndrome, which could be caused by a lack of 5de(w.amni zqj+6ds1-f 0n jysufficient surfactant in the pulmonary alveoli. The diagram below shows two different alveoli structures.


1.Describe one feature of the surfactant.

2.Suggest a treatment for infant respiratory distress syndrome.

3.Draw a labelled diagram of the structures in an alveolus that are important for gas exchange.

  Which of the following is a reason that embryoni k,lhacjl)3g/c stem cells are not used in the treatmel lc/,) jg3haknt of leukaemia?

  The table shows the diameters nxd:8c; k,nj pof red blood cells from different organisms. Which red blood cell will have the highest surfa,xp: 8knd cj;nce area to volume ratio?

1.Explain how the shape of erythrocm9 qvutltsc . +krb716ytes and cells lining the proximal convoluted tubule make these cells more adapted to the functions they perform. k1vms bct+9 r76l.qut

2.Compare and contrast the structure of striated muscle cells and cardiac muscle fibres.

3.Explain how the structure of egg and sperm cells are adapted to their functions.

  Which statements about embryonic stemx7uqxvo9*b :* j9cdxq cells and specialised cells is/are not tru d9cbxoxv9*q7 quj :x*e?

I. Embryonic stem cells have higher levels of DNA methylation than differentiated cells
II. Specialised cells are more differentiated than embryonic stem cells
III. Most specialised cells and embryonic stem cells both contain the entire genome of an organism

  In humans, which of the follo(fea zslg*i2; f4oz *vwing is the correct order from smallest to largest?4a;v(zfgls*2 i *z efo

  Which row in the following table gives the correct disadvantages of the difffxp8z pue*q*7 hay2s(erent stem cell sour2h*p8 eyf(q 7zs*u xpaces for therapeutic uses?

1.Describe how the use of stem cells may be used to treat type I diabetes in mb9x1zlzlb0(d.rmi)the futurezl ( dm)l bz.i91mbxr0.

2.Explain the factors that limit cell size in humans.

3.Explain how red blood cells and striated muscle fibres are adapted to their function.

Below are diagrams of specialised cells (m6 ye0p+ lsq/ ;wbefd5not to scale).

1.Put these cells in order of size, from the smallest to the largest.

2.Compare and contrast totipotent, pluripotent and multipotent stem cells.